Carton



Aug. 16, 1949. w. H. ARTHUR 2,479,456

CART

Filed Aug. 24, 1944 5 Sheets-Sheet 1 y X JhUVIflOp Williamlzlrfkaratkwmu Aug. 16, 1949.

W. H. ARTHUR CARTON 5 Sheets-Sheet 2 Filed Aug. 24, 1944 Aug. 16, 1949.w H. ARTHUR 2,479,456

CARTON Filed Aug. 24, 1944 3 Sheets-Sheet 3 Patented Aug. 16, 1949CARTON William 11. Arthur, Chicago, 111., assignor to omitaincrCorporation of America, Chicago, 111., a

corporation of Delaware Application August 24, 1944, Serial No. 550,934

3 Claims. 1

The invention relates to cartons, and more particularly to a wrappedcarton formed by initially securing a sheet of wrapping material to acarton blank and then folding the carton blank with the attachedwrapping material into its final form, in which the wrapper completelyen-' closes the carton. It is contemplated that the carton may be usedin cases where an automatic overwrapping machine is not justifiedcommercially, but where on the contrary, the carton may be set up,wrapped and sealed by hand.

In accordance with the preferred embodiment of the invention the cartonblank includes a body portion which is adapted to be folded intotubularform, and two end flaps adapted to close the ends of the tubularcarton. The sheet of overwrapping material may be suitably secured inone or more places to the main body portion, and is also secured to theend flaps. In assembling, the carton body portion with the wrappersecured thereto is first folded to tubular form and sealed, leaving theend flaps and tubular extensions of the wrapper projecting laterallybeyond the edges of the carton. The flaps are then bent downwardly,carrying with them portions of the wrapper and forming lateral "ears insaid wrapping material, after which the laterally projecting portions ofthe wrapping material are suitably folded and sealed either by means ofan adhesive or by heat-sealing.

The invention will be more readily understood by reference to theaccompanying drawings, in which is set forth by way of illustration aspecific embodiment of the inventive thought.

In the drawings:

Fig. 1 is a plan view of a carton blank showing the over-wrappingmaterial attached thereto;

Fig. 2 is a sectional view on the line 2-2 of Fig. 1;

Fig. 3 is a perspective view showing the carton with the attachedwrapping material, partially set up;

Fig. 4 is a perspective view showing the carton set up and the wrappingmaterial in process of being folded down with the end flaps to form earsin the wrapping material;

Figs. 5 and 6 are perspective views showing subsequent steps in thefolding and sealing of the wrapper;

Fig. '7 is a sectional view Fig. 6; and

Fig. 8 is a sectional view on the line 8-8 of Fig. 6, the wrapping andsealing steps being assumed as completed in Figs. 6 and 7.

As shown the reference numeral A denotes in on the line 1 1 of generalthe carton or blank therefor, and the reference numeral 13 denotes asheet of overwrapping material which is adapted to be suitably securedthereto so as to facilitate setting up and sealing of the carton. Thecarton may be formed of any suitable material, such as paperboard or thelike, andthe overwrapping material is preferably transparent material,such as cellophane or the like, although in its broadest aspects awrapper of other than transparent material may be employed. Preferablythe wrapping material is adapted for heat-sealing, and as such may bethe so-called heat-sealing cellophane, but other heat-sealing film, suchas Pliofilm, may be employed. Where non-heat-sealing material isemployed the sealing may be performed by means of adhesives.

The carton blank A comprises a body portion including essentially abottom, cover, rear panel and front panel, and may include also suitablelocking and closure flaps, to which body portion the overwrappingmaterial is adapted to be secured. The said carton also includes, inaddition to the main body portion, a pair of end flaps extendinglaterally from the body portion, to which flaps the wrapping material Bis likewise secured.

As shown the body portion of the carton comprises a bottom panel ill,acover panel ii, a rear panel 12 and a front panel 13. Secured to thecover panel ll there may be provided a front tuck flap it which isadapted to fit inside of the front panel I3 when the box is assembled.Extending laterally from the bottom panel ill there may be provided apair of and panels i5 and it which are adapted to be turned up andsecured in position by means of a plurality of locking flaps carried onthe ends of the rear panel 52 and front panel [3, respectively. As shownlooking flaps I1 and i8 project laterally from the rear panel l2, andlike flaps l9 and 20 project laterally from the front panel l3. It willbe observed that the locking flaps H and 19 projecting from one side ofthe blank are provided with suitable locking slots 30 which facedownwardly, whereas the flaps I8 and 20 projecting from the other sideof the blank have similar slots 30 which face upwardly. Thisconstruction assists in preventing the carton from collapsingaccidentally by disengagement of the slots 30. Flaps 2| and 22 projectlaterally from the cover panel ll.

, It will be noted from an inspection of Figs. 1 and 2 that the sheet ofoverwrapping material B is of approximately the same size as the cartonblank including the projecting flaps and panels.

As shown, however, the wrapper is of slightly less width than thecombined carton and terminates a short distance from the outer edge ofthe front panel l3. While the exact dimensions of the respective membersA and B may be varled as desired, it is desirable that the carton blankand wrapper should be approximately the same over-all dimensions, andthe wrapping sheet should preferably extend beyond the main or bodyportion of the carton blank, and should preferably not extend materiallybeyond the margins of the extension panels but should rather terminatesomewhat short of the extremities of such extension flaps and panels.This construction is illustrated in Fig. 1.

The wrapping or cover sheet B may be suitably secured to the cartonblank in any desired manner. Desirably, however, the wrapper is securedto the body of the carton along a longitudinal strip 23 adjacent one endof the cover sheet and parallel to the outer extremity of the frontpanel l3. If desired the strip 23 may be a glue line, or the cover sheetmay be secured to the panel l3 by heat-sealing along the line 23.

In the preferred embodiment of the invention the marginal portion 36 ofthe cover sheet B is turned under and secured to the panel |3 by meansof glue strip or the like 23 as best shown in Figs. 1 and 3. Thisarrangement has the advantage that strain on the sheet B which mayresult from shrinkage thereof in storage or from other causes will berelieved without causing separation of the sheet B from more than theextreme marginal portion of the glue strip 23, and the utility of thepackage will be unimpaired.

In addition to securing the cover sheet to the body portion of thecarton such sheet should likewise be secured in any suitable manner tothe laterally projecting flaps 2| and 22. As shown the cover sheet issecured to the said flaps 2| and 22 along parallel strips 24 and 25,respectively. As shown these strips are located along the mid portion ofthe flaps 2| and 22 and should preferably be spaced from the outer edgesof said flaps. The strips 24 and 25 and the strip 23 may either be gluelines or may be formed by heat-sealing.

It has been found that the three adhesive strip lines 23, 24 and 25 aresufficient for the purposes of the present invention. Although moreadhesive lines may be used the present arrangement is most desirablebecause no undue stress is placed upon the wrapper material.

In setting up the box the blank is placed. on a flat surface with thewrapper B face down. whereupon the end panels l5 and I6 are foldedupwardly at right angles to the bottom panel Ill. The locking flaps l1and I8, and I9 and formed on the ends of the rear and front panels l2and I3, respectively, are then folded inwardly parallel to the panels l5and I6, and are secured in place by interlocking the flaps I1 and I9 andI8 and 20, respectively, by means of the locking slots 30. Thisoperation is illustrated in Fig. 3.

The cover panel II is then folded down to the position shown in Fig. 4and the front tuck flap I4 is inserted behind the upstanding front panell3. The end flaps 2| and 22, carrying with them portions of the wrapper,extend laterally beyond the margin of the carton as indicated at theright hand portion of Fig. 4. It will be noted that the carton is now intubular form, with laterally extending tubular portions 35, 35 of thewrapper projecting beyond the ends of the carton and sustained by theend flaps 2|, 22 to which the wrapper is secured. An unattached flap orsuraccomplished by means of a hot iron, with which the carton may beengaged, and if desired the top of the wrapper may also be secured tothe carton.

The end flaps 2| and 22 are then depressed, as indicated at the lefthand portion of Fig. 4, to provide ears 32, 32 in the tubular extensions35 of the wrapper portion, and the said ears and the margins of thewrapper portion are then.

brought together as indicated in Figs. 5 and 6 and may be secured eitherby heat-sealing or by means of a suitable adhesive. It will be notedthat when so secured in place the wrapper holds the end flaps 2| and 22downwardly, thus completely closing the ends of the tubular carton andproviding a vapor-tight package.

The carton is especially suitable for packaging fruits or vegetables,and is ideal for use with dehydrated foods.

A preferred embodiment of the invention has been described in detail forthe purpose of illustration, but it will be apparent that the inventionin its broadest aspects may be modified within the scope of theaccompanying claims. Thus while the carton as shown is provided with endpanels l5 and I6 and locking flaps ll, l8, l9 and 20, and while theseelements are desirable in order to permit top filling of the carton,they may be omitted where and filling of the carton is resorted to, andin such case the carton may be closed simply by means of the wrappersupporting flaps 2| and 22 and thefolded and sealed ends of the wrapper.Similarly, while the tucking flap i4 is desirable in order to providerigidity for the package, such tucking flap may be omitted if desiredand the front of the carton may be closed and sealed simply by securingthe free end 3| of the wrapper against the front of the carton, thuscompletely overlapping the meeting portions of the tubular body memberand providing a vapor-tight seal.

Other modifications and variations will be apparent to those skilled inthe art.

I claim:

1. In the combination comprising a carton blank having' a front wall, abottom panel, a back wall and a cover panel consecutively arranged, atleast some of said walls and panels having end closure flaps thereon,and a sheet of overwrapping material secured to said blank only withinareas on said front wall and remote from said front wall, theimprovement wherein one marginal portion of said sheet is folded underand the underlying portion thereof is secured to the outer surface ofsaid front wall, said underlying portion constituting the only part ofsaid sheet secured to said front wall.

2. The improved combination which comprises a sheet of foldablepaperboard cut and scored to form a front wall, a bottom panel, a backwall, and a cover panel integrally joined in that order, end closuremeans including integral end flaps on said cover panel, and a sheet ofoverwrapping material secured to said paperboard sheet sub-' stantiallyonly within areas on said end flaps and on said front wall adjacent theouter margin thereof, one marginal portion of said overwrapping materialbeing folded under and the underlying portion thereof being secured tothe outer surface of said front wall. said underlying portionconstituting the only part of said over-wrapping sheet secured to saidfront wall.

3. The improved combination which comprises a sheet oi foldablepaperboard cut and scored to form a front wall, a bottom panel, a backwall and a cover panel integrally joined in that order. end closuremeans on said walls and panels, and a sheet of overwrapping materialhaving a tendency to shrink in storage secured to said paperboard sheetsubstantially only within areas on said front wall adjacent the outermargin thereof and remote from said front wailI one marginal portion ofsaid over-wrapping material being folded under and the underlyingportion thereof being secured to the outer surface of said front wall,whereby strain on said overwrapping material caused by shrinkage isrelieved by slight peeling of said marginal portion, said underlyingportion constituting the only part of said overwrapping sheet secured tosaid front wall.

WILLIAM H. ARTHUR.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,789,699 Durham Jan. 20, 19311,816,085 Langhammer July 28, 1931 2,294,690 Perry Sept. 1, 19422,296,830 Beals Sept. 29, 1942 FOREIGN PATENTS Number Country Date19,750 Great Britain Sept. 1, 1913 24,546 Great Britain Nov. 21, 1898

